Bollcoin, October 24 – According to Bloomberg, citing user statistics on Dune Analytics, crypto-related event contracts on Kalshi and Polymarket recorded $2.7 billion in weekly notional trading volume last week, a record high. Volume came mainly from "up/down" contracts, in which traders bet on whether bitcoin and other assets will rise or fall over periods ranging from 5 minutes to the close of the day, with a single period of Kalshi's 15-minute bitcoin contracts able to exceed $1 million in trading volume. Crypto is currently the second-largest category on both platforms, behind sports. Coinbase, Crypto.com, Gemini and Kraken have obtained the relevant US licenses, and Blockchain.com has submitted an application.